What is the best description of the connotative meaning of the word immature in this sentence? You are so immature! Angela shouted, furious that her younger brother had embarrassed her in front of her friends.

The connotative meaning of a word, is not the denotative, or dictionary, meaning of a word. Instead, the connotative meaning is the emotion that is conjured by a word. (How it makes you feel). Therefor in the sentence when Angela shouts that her brothers are immature, she is meaning that they are stupid or wrong for the actions that they have taken. You can pick up the meaning based on her tone, which is angry. She has been embarrassed by them and feels shame.